Take 3ml and 2ml Q series cartridges as an example.
The main reasons have to do with the space designed inside the cartridge, the amount of cotton used, air pressure balance, and other factors. Below are some specific explanations:
1. Internal space and air pressure balance
More space: 3ml cartridges have more space inside, which helps to maintain better air pressure balance. Air pressure balance is one of the keys to preventing oil leakage. The relatively larger space reduces the risk of oil leakage due to high internal pressure caused by smoking or temperature changes.
Less effect of liquid expansion: In smaller 2ml cartridges, the expansion of the liquid has a more significant effect on the internal space, especially in hot environments. Since the larger 3ml cartridges have more space, the expansion of the liquid does not increase the internal pressure as much as it does in the 2ml cartridges, thus reducing the risk of oil leakage.
2. Cotton Absorption Capacity
Proportion of Cotton: Generally speaking, a 3ml cartridge may be designed to hold more cotton or absorbent material, which is more effective in absorbing the oil and preventing excess oil from flowing into the airway. In a 2ml cartridge, the relatively small amount of cotton and the relatively low oil absorption capacity make it easier for the oil to build up in the airway, which can lead to leakage problems.
Oil flow control: Larger cartridges have more space inside for the proper arrangement of cotton, which helps to control the flow of oil better and prevent it from entering the airway too quickly or too much.
3. Airway design
Larger cartridges may have a more optimized airway design: 3ml cartridges are typically used in higher-powered devices, so their airway design is more complex and optimized to ensure that the flow of gas and oil is kept in balance. This design reduces the possibility of excessive oil entering the airway, thus reducing the risk of leakage.
Control of oil flow: 3ml cartridges can be designed with longer or more complex airways, which helps to minimize oil spillage or leakage during inhalation.
4. Smoking frequency and environmental effects
Relationship between oil volume and air pressure: 3ml cartridges are loaded with a larger amount of oil, so the oil volume in the oil compartment will not decrease rapidly during frequent use, which can better maintain the pressure balance in the oil compartment. Comparatively speaking, 2ml cartridges are more prone to leakage due to air pressure imbalance when the volume of oil decreases.
Duration of use: 3ml cartridges can be used for a longer period of time without the need to refill, while 2ml cartridges need to be refilled more frequently, and the refilling operation itself may increase the risk of leakage.
Conclusion:
The larger capacity 3ml cartridges may perform better than 2ml cartridges in terms of leakage prevention, not only because of their larger space, but also due to a number of factors such as the design of the internal cotton suction, the optimization of the airway, and the balance of air pressure. Therefore, although the basic structure of different capacity cartridges is similar, in terms of specific details, the cartridges can be better designed and optimized, such as upgrading the Q series cartridges from 2 ml to 3 ml, to reduce the occurrence of oil leakage problems.
